Laser powder bed fusion additive manufacturing of NiTi shape memory alloys: a review

Highlights The printability, microstructural characteristics, phase transformation behaviors, and mechanical properties of LPBF-fabricated NiTi alloys are reviewed. Several common structures for LPBF-fabricated NiTi alloys are considered and their various fields of application are illustrated. The technical challenges, limitations, and development tendencies of LPBF-fabricated NiTi alloys are put forward.